It's been a process in motion since the formation of the Champions League. Look at the teams that won the European Cup in the decade or so before the CL was formed and you've got a cross section from across Europe. Now it's the same handful of "super clubs" competing, pretty much all of whom have got their domestic leagues sewn up before a ball is kicked. When you pretty much know that City, Bayern, PSG, Barca/Real, and Juve will win their respective league then it's already farcical and it won't change now because the financial gap has been entrenched by the CL. Even clubs like Inter, Napoli, or Milan who have decent seasons end up losing their best players. The sport has become a bit crap tbh.